I believe since these are fields where we directly engage with people it is necessary to understand and follow social theories since they describe the peoples behaviour, response to things as well as how we can deal with them. Hence i find social theories a necessity in PR and Media
Getting to know various backgrounds of people with respect to social context through social theories surely unpacks divergent dogmas of every race, thus giving rise to detailed research.
كونها الاقرب لعلم الاتصال فضلا عن ان علم الاتصال مازالت نظرياته في طور الاستحداث والتكوين والتاصيل بالمقارنة مع النظريات الاجتماعية ذات البعد التاريخي الاكبر من علم التصال